Simscape and Simdriveline disfunctionality

I have been using MATLAB and Simulink for couple of years, I used to use the old Simscape and Simdriveline blocks to model HEV vehicles in detail and never had problem until I tried to use the new Simscape and Simdriveline tool boxes in matlab 2012 or 2013a. For example I use ideal torque sensor block instead of torque sensor block or new vehicle blocks to. In addition I add the solver configuration block which I have not used before in old simulink(2010) Now I get different errors such as: loop errors, bus error or sometimes I get inf error.

Does anyone have any clues what is wrong and what should i do to solve this problem? I tried different solvers, the only thing has changed is the error from loop to inf error.

I really appreciate if someone help me on this problem